| 03-027-11501-00-00 | 35029 | Grayson Smackover Unit | Petro-Chem Operating Company, Inc. | COLUMBIA | 34-16S-21W | GRAYSON | SMACKOVER | Oil - Production | Producing |
| 03-027-11505-00-00 | 35101 | Grayson Smackover Unit | Petro-Chem Operating Company, Inc. | COLUMBIA | 35-16S-21W | GRAYSON | SMACKOVER | Oil - Production | Producing |
| 03-027-11508-00-00 | 35122 | Grayson Smackover Unit | Petro-Chem Operating Company, Inc. | COLUMBIA | 27-16S-21W | GRAYSON | SMACKOVER | Oil - Production | Active |
| 03-027-11509-00-00 | 35123 | Grayson Smackover Unit | Petro-Chem Operating Company, Inc. | COLUMBIA | 26-16S-21W | GRAYSON | SMACKOVER | Oil - Production | Producing |
| 03-027-11511-00-00 | 35138 | Grayson Smackover Unit | Petro-Chem Operating Company, Inc. | COLUMBIA | 34-16S-21W | GRAYSON | SMACKOVER | Oil - Production | Producing |
| 03-027-11513-00-00 | 35151 | Grayson Smackover Unit | Petro-Chem Operating Company, Inc. | COLUMBIA | 35-16S-21W | GRAYSON | SMACKOVER | Oil - Production | Producing |
| 03-027-11517-00-00 | 35509 | Grayson Smackover Unit | Petro-Chem Operating Company, Inc. | COLUMBIA | 34-16S-21W | GRAYSON | SMACKOVER | Oil - Production | Producing |
| 03-027-11518-00-00 | 35417 | Grayson Smackover Unit | Petro-Chem Operating Company, Inc. | COLUMBIA | 27-16S-21W | GRAYSON | SMACKOVER | Enhanced Oil Recovery | Active |
| 03-027-11520-00-00 | 35393 | Grayson Smackover Unit | Petro-Chem Operating Company, Inc. | COLUMBIA | 33-16S-21W | GRAYSON | SMACKOVER | Enhanced Oil Recovery | Active |
| 03-027-11531-00-00 | 35382 | Grayson Smackover Unit | Petro-Chem Operating Company, Inc. | COLUMBIA | 35-16S-21W | GRAYSON | SMACKOVER | Oil - Production | Producing |
| 03-027-11533-00-00 | 35515 | Grayson Smackover Unit | Petro-Chem Operating Company, Inc. | COLUMBIA | 27-16S-21W | GRAYSON | SMACKOVER | Enhanced Oil Recovery | Active |
| 03-027-11534-00-00 | 35445 | Grayson Smackover Unit | Petro-Chem Operating Company, Inc. | COLUMBIA | 28-16S-21W | GRAYSON | SMACKOVER | Enhanced Oil Recovery | Active |
| 03-091-10614-00-00 | 32123 | M&P BANK | Lyons, Hilliard & Watson Inc | MILLER | 21-16S-26W | FOUKE | SMACKOVER | Oil - Production | Plugged and Abandoned |